Chaos Analysis Based on Time Series of Semiconductor Laser Chaos Using Improved (Extended) Chaos Degree

Abstract

Entropic chaos degree is a criterion for quantifying chaos by applying information dynamics. Entropic chaos degree of a time series can be directly computed without any dynamical systems. Some authors have recently demonstrated that an improved (extended) entropic chaos degree of a difference equation has nearly the same value as its Lyapunov exponent under typical chaotic conditions. In this paper, chaos associated with the time series obtained from experiments based on semiconductor laser chaos is quantified by incorporating the improved entropic chaos degree.